octopus - sea animal silhouette for icon or sign on a sea or ocean theme. black silhouette of an octopus for a logo or pict

abstract animal aquarium aquatic black cephalopod character danger emblem fresh icon invertebrate isolated kraken life logo marine mollusca mollusk monster nature ocean octopus pattern pict pictogram print sea seafood sign silhouette symbol tattoo tentacle tentacles theme tropical underwater vector wild wildlife